I really don't know what to think, I took 3 pregnancy test today, I've been feeling off lately and late on my period by almost 3 weeks. The first one I took didn't work at all. The second was this one. The third one was negative.. My son is a little over 4 months now. My periods since I've had him were regular, on time. I had Trenton the 27th of September. I had a period October -December normally.. I didn't have one in January. I am on the pill, and they said my periods should be normal(which until this point they have been). I've been having cramps and I spotted, barely, for a day and a half, I've also been nauseous at random points of the day.. What do you all think?